scholarly journals Roles of the Tibetan Plateau vortices in the record Meiyu rainfall in 2020

2020 ◽  
Author(s):  
Lun Li ◽  
Congwen Zhu ◽  
Renhe Zhang ◽  
Boqi Liu
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Tibetan Plateau Vortices

Development and eastward movement mechanisms of the Tibetan Plateau vortices moving off the Tibetan Plateau

2018 ◽  
Vol 52 (7-8) ◽  
pp. 4849-4859 ◽  
Author(s):  
Lun Li ◽  
Renhe Zhang ◽  
Min Wen ◽  
Jianping Duan
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Tibetan Plateau Vortices

scholarly journals Climatology of Tibetan Plateau Vortices in Reanalysis Data and a High-Resolution Global Climate Model

2019 ◽  
Vol 32 (6) ◽  
pp. 1933-1950 ◽  
Author(s):  
Julia Curio ◽  
Reinhard Schiemann ◽  
Kevin I. Hodges ◽  
Andrew G. Turner
Keyword(s):  
High Resolution ◽  
Tibetan Plateau ◽  
Climate Model ◽  
Global Climate ◽  
Global Climate Model ◽  
Horizontal Resolution ◽  
Northwestern Part ◽  
The Tibetan Plateau ◽  
Wide Range ◽  
Tibetan Plateau Vortices

The Tibetan Plateau (TP) and surrounding high mountains constitute an important forcing of the atmospheric circulation due to their height and extent, and thereby impact weather and climate in downstream regions of East Asia. Mesoscale Tibetan Plateau vortices (TPVs) are one of the major precipitation-producing systems on the TP. A fraction of TPVs move off the TP to the east and can trigger extreme precipitation in parts of China, such as the Sichuan province and the Yangtze River valley, which can result in severe flooding. In this study, the climatology of TPV occurrence is examined in two reanalyses and, for the first time, in a high-resolution global climate model using an objective feature tracking algorithm. Most TPVs are generated in the northwestern part of the TP; the center of this main genesis region is small and stable throughout the year. The strength and position of the subtropical westerly jet is correlated to the distance TPVs can travel eastward and therefore could have an effect on whether or not a TPV is moving off the TP. TPV-associated precipitation can account for up to 40% of the total precipitation in parts of China in selected months, often due to individual TPVs. The results show that the global climate model is able to simulate TPVs at N512 (~25 km) horizontal resolution and in general agrees with the reanalyses. The fact that the global climate model can represent the TPV climatology opens a wide range of options for future model-based research on TPVs.

Inter-decadal Change of Tibetan Plateau Vortices during the past four Decades and its Possible Mechanism

2021 ◽  
Author(s):  
Zhiqiang Lin ◽  
Weidong Guo ◽  
Xiuping Yao ◽  
Jun Du ◽  
Jun Ge
Keyword(s):  
Tibetan Plateau ◽  
Wave Train ◽  
Warm Season ◽  
The Tibetan Plateau ◽  
Tropospheric Temperature ◽  
Decadal Change ◽  
Near Surface ◽  
Westerly Jet ◽  
Surrounding Areas ◽  
Tibetan Plateau Vortices

<p>The Tibetan Plateau vortices (TPVs) are mesoscale weather systems active at the near-surface of the Tibetan Plateau (TP), which are one of the major precipitation-producing systems over the TP and its surrounding areas. TPVs mainly occur in the warm season from May to September. In this paper, we investigate the inter-decadal change of TPVs in the warm seasons of 1979–2017 by analyzing five widely used reanalysis datasets. A significant change of the TPVs’ frequency appears around the mid-1990s, associated with less TPVs during 1979–1996 and more TPVs during 1997–2017. The abrupt change is caused by a transition of the Atlantic Multi-decadal Oscillation (AMO) from a cold phase to a warm phase in the mid-1990s. The shift of AMO leads to a silk-road pattern wave train and a spatially asymmetric change of tropospheric temperature. It modifies the intensity of the subtropical westerly jet and the TP heating, leading to the inter-decadal change of TPV activities.</p>

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